I bought some old films that are likely to be fogged, or at least there is a risk of it, so I bought Photography Formulas potassium bromide.
It comes in crystals, and no instructions.
How much of it would you use and would you mix it with the developer - such as Rodinal 09 or Rodinal Special One shot.
I could weigh up the crystals letīs say 2 grams or 5 grams - how much water would you recommend - which dilution?